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1994-06-07 - Re: The Crypto Home Shopping Network

Header Data

From: Eli Brandt <ebrandt@jarthur.cs.hmc.edu>
To: cypherpunks list <cypherpunks@toad.com>
Message Hash: 38a56b4fe2d0826c7d3a89a5425cb3ab37387cdeb6922191c6685a201bb7ae7f
Message ID: <9406070122.AA17402@toad.com>
Reply To: <199406062335.AAA27342@an-teallach.com>
UTC Datetime: 1994-06-07 01:22:54 UTC
Raw Date: Mon, 6 Jun 94 18:22:54 PDT

Raw message

From: Eli Brandt <ebrandt@jarthur.cs.hmc.edu>
Date: Mon, 6 Jun 94 18:22:54 PDT
To: cypherpunks list <cypherpunks@toad.com>
Subject: Re: The Crypto Home Shopping Network
In-Reply-To: <199406062335.AAA27342@an-teallach.com>
Message-ID: <9406070122.AA17402@toad.com>
MIME-Version: 1.0
Content-Type: text/plain


> From: gtoal@an-teallach.com (Graham Toal)
> I think RC4 is the 32 bit cypher used in cellular phones throughout
> Europe.  Rumour has it it can be cracked in realtime.

I dunno whether that's RC4, but RC4 is a stream cipher developed by
Rivest.  It's not patented; instead, RSADSI licenses it only as an
object module.  RC4 and RC2 (a block cipher) use variable-length
keys, and can be exported if the key length is 40 bits or less.
(Naturally, they're not very strong when used this way...)

   Eli   ebrandt@hmc.edu
         finger for PGP key.

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